From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
Krzysztof Kozlowski <krzk@kernel.org>,
Alim Akhtar <alim.akhtar@samsung.com>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH AUTOSEL 5.4 14/40] arm64: dts: exynos: Fix silent hang after boot on Espresso
Date: Sat, 8 Aug 2020 19:38:18 -0400 [thread overview]
Message-ID: <20200808233844.3618823-14-sashal@kernel.org> (raw)
In-Reply-To: <20200808233844.3618823-1-sashal@kernel.org>
From: Alim Akhtar <alim.akhtar@samsung.com>
[ Upstream commit b072714bfc0e42c984b8fd6e069f3ca17de8137a ]
Once regulators are disabled after kernel boot, on Espresso board silent
hang observed because of LDO7 being disabled. LDO7 actually provide
power to CPU cores and non-cpu blocks circuitries. Keep this regulator
always-on to fix this hang.
Fixes: 9589f7721e16 ("arm64: dts: Add S2MPS15 PMIC node on exynos7-espresso")
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm64/boot/dts/exynos/exynos7-espresso.dts | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
index 080e0f56e108f..61ee7b6a31594 100644
--- a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
@@ -157,6 +157,7 @@ ldo7_reg: LDO7 {
regulator-min-microvolt = <700000>;
regulator-max-microvolt = <1150000>;
regulator-enable-ramp-delay = <125>;
+ regulator-always-on;
};
ldo8_reg: LDO8 {
--
2.25.1
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next prev parent reply other threads:[~2020-08-08 23:50 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200808233844.3618823-1-sashal@kernel.org>
2020-08-08 23:38 ` [PATCH AUTOSEL 5.4 04/40] arm64: dts: rockchip: fix rk3368-lion gmac reset gpio Sasha Levin
2020-08-08 23:38 ` [PATCH AUTOSEL 5.4 05/40] arm64: dts: rockchip: fix rk3399-puma vcc5v0-host gpio Sasha Levin
2020-08-08 23:38 ` [PATCH AUTOSEL 5.4 06/40] arm64: dts: rockchip: fix rk3399-puma gmac reset gpio Sasha Levin
2020-08-08 23:38 ` [PATCH AUTOSEL 5.4 12/40] ARM: exynos: MCPM: Restore big.LITTLE cpuidle support Sasha Levin
2020-08-08 23:38 ` [PATCH AUTOSEL 5.4 13/40] firmware: arm_scmi: Fix SCMI genpd domain probing Sasha Levin
2020-08-08 23:38 ` Sasha Levin [this message]
2020-08-08 23:38 ` [PATCH AUTOSEL 5.4 16/40] clk: scmi: Fix min and max rate when registering clocks with discrete rates Sasha Levin
2020-08-08 23:38 ` [PATCH AUTOSEL 5.4 23/40] ARM: at91: pm: add missing put_device() call in at91_pm_sram_init() Sasha Levin
2020-08-08 23:38 ` [PATCH AUTOSEL 5.4 24/40] ARM: dts: sunxi: bananapi-m2-plus-v1.2: Add regulator supply to all CPU cores Sasha Levin
2020-08-08 23:38 ` [PATCH AUTOSEL 5.4 25/40] ARM: dts: sunxi: bananapi-m2-plus-v1.2: Fix CPU supply voltages Sasha Levin
2020-08-08 23:38 ` [PATCH AUTOSEL 5.4 31/40] spi: rockchip: Fix error in SPI slave pio read Sasha Levin
2020-08-08 23:38 ` [PATCH AUTOSEL 5.4 32/40] ARM: socfpga: PM: add missing put_device() call in socfpga_setup_ocram_self_refresh() Sasha Levin
2020-08-08 23:38 ` [PATCH AUTOSEL 5.4 34/40] irqchip/ti-sci-inta: Fix return value about devm_ioremap_resource() Sasha Levin
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